All depends on what the hulls like, Atlantic 75's have ballast for a reason though, makes hell of a difference running into the weather.
Some one on here has built a carbon fibre RIB, its lighter so needs less HP so is cheaper to run.

All depends on what the hulls like, Atlantic 75's have ballast for a reason though, makes hell of a difference running into the weather.
Some one on here has built a carbon fibre RIB, its lighter so needs less HP so is cheaper to run.

I have just been reading an posting on the lighter the boat the better fuel you get.